Basionym Name:Agaricus diffusus Batsch, Elench. fung. (Halle): 143 (1786)
Homotypic synonyms:Fungus diffusus (Batsch) Kuntze, Revis. gen. pl. (Leipzig) 3(3): 479 (1898)Psathyra diffusa (Batsch) Lapl., Dict. iconogr. champ. sup. (Paris): 293 (1894)